How Many Atoms Are Present in a Sample of Pure

question 64

Multiple Choice

How many atoms are present in a sample of pure iron with a mass of 300 g? (The atomic mass of iron = 56 and N_A = 6.02 x 10²³)

• A)1.8 x 10¹⁹
• B)6.7 x 10²²
• C)1.6 x 10²⁸
• D)3.2 x 10²⁴

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